Yes, 100%.
> I have a very hard time believing that the total harm of devices that watch us (actively or potentially) exceeds the actual benefits delivered by those devices.
This is a false dichotomy logical fallacy. You are incorrectly assuming that all of the good from smartphones comes at a forced, dramatic reduction in privacy. I know this is false because even a kitchen timer with no permissions is a useful element of smartphones that can have 0 privacy concerns.
The invasion of personal privacy at scale has indeed caused enormous societal harm that I personally think quite obviously outweighs any "good" that could come from it - and I also personally think that any "good" done from the direct causing of suffering of others is not in fact good at all.